I am posting this for curiosity sake. I forced TWO updates on My AT&T Lumia 900. Now I keep here -- 3 Updates went out. I only DID TWO. I did successfully get WP 7.8. Phone is running fine... HOWEVER If I am missing a Firmware/HW Update I would like to get it..

So my question is can ANYONE who has the ENTIRE last update done... Confirm my version numbers?

It was other phones (manufacturers/models) that were getting three updates, not the Lumia 900 on ATT. The first was some sort of update that dealt with handling the camera on phones without buttons, the second was the 7.8 update. Select phones that were getting a third update (prior to the 7.8 update) was for something else.

Below is from Nokia's website. I forced the update via zune and had to force 2 updates. The last update occurred automatically and it was the nokia update for the firmware. at&t lumia 900. a total of 3 updates for me

Support for your Nokia Lumia 900
The availability of this update may depend on your network service provider.Latest software release for Nokia Lumia 900 is 2175.2307.8858.12480

New start screen experience with resizable tiles: to change the size, tap and hold the live tile

I got the third update (1 update after 7.8 was installed) on my Lumia 900 and I notice nothing different other than maybe a quicker start screen. Nokia won't give me (or they don't have) any information on it at all.

I restored my AT&T Lumia 900 back to 7.5 and then forced the 7.8 update again. This time I did get three updates - the last one was a "Nokia Update for Windows Phone". I only got two updates a few weeks ago. All the firmware and hardware numbers are the same though.